会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 42. 发明申请
    • METHOD AND APPARATUS FOR COMPRESSING CHANNEL STATE INFORMATION BASED ON PATH LOCATION INFORMATION
    • 基于路径位置信息压缩信道状态信息的方法和装置
    • US20130201912A1
    • 2013-08-08
    • US13698927
    • 2011-05-18
    • Hongsan ShengYingxue K. LiPhilip J. PietraskiCarl WangRon Porat
    • Hongsan ShengYingxue K. LiPhilip J. PietraskiCarl WangRon Porat
    • H04W28/20
    • H04W28/20H04B7/0413H04B7/0626H04B7/0634H04B7/065H04B7/0663
    • Methods and apparatus are described for compressing channel state information (CSI) in time-domain based on path location information for CSI feedback. Downlink (DL) CSI is compressed in the time domain and fed back by not sending the multipath location information, or sending at a very low rate. In one method, a wireless transmit/receive unit (WTRU) selects the strongest multipath components based on channel characteristics. The multipath components are quantized in the time domain via direct or vector based quantization. The base station reconstructs a channel impulse response from the fed back quantized multipath components and applies same to precoding processing. In another method, the WTRU feeds back information associated with a narrowband portion(s) of a system spectrum. The selected narrowband portion(s) have sufficient density over time to allow good precoding per subband or across the system spectrum. Short term feedback may be augmented with long term channel information.
    • 描述了用于基于CSI反馈的路径位置信息在时域中压缩信道状态信息(CSI)的方法和装置。 下行链路(DL)CSI在时域中被压缩,并且通过不发送多路径位置信息或以非常低的速率发送来反馈。 在一种方法中,无线发射/接收单元(WTRU)基于信道特性选择最强的多径分量。 多径分量通过直接或矢量量化在时域中量化。 基站从反馈量化多路径分量重构信道脉冲响应,并将其应用于预编码处理。 在另一种方法中,WTRU反馈与系统频谱的窄带部分相关联的信息。 所选择的窄带部分随着时间具有足够的密度,以允许每个子带或跨系统频谱的良好预编码。 短期反馈可能会增加长期渠道信息。
    • 44. 发明授权
    • System and method for facilitating co-channel and co-existence via enhanced frame preambles
    • 通过增强的帧前导码来促进共通道和共存的系统和方法
    • US08422432B2
    • 2013-04-16
    • US13285837
    • 2011-10-31
    • Paul W. PigginSrikanth GummadiRon PoratKenneth L. Stanwood
    • Paul W. PigginSrikanth GummadiRon PoratKenneth L. Stanwood
    • H04W4/00
    • H04W16/14H04W8/005H04W48/12H04W76/10H04W92/20
    • Enhanced frame preambles facilitate co-channel co-existence in a wireless communication environment by having at least one preamble characteristic that connotes channel-sharing information regarding the wireless communication environment. In an exemplary embodiment, a downlink subframe is received in one or more wireless communication signals in a wireless communication environment. A preamble is detected in the downlink subframe, and at least one characteristic of the preamble is ascertained. Channel-sharing information for the wireless communication environment is determined based upon the at least one characteristic of the preamble. In another exemplary embodiment, a channel is scanned to detect secondary preambles being transmitted on the channel. A current preamble configuration, including a permutation of preamble location and preamble content corresponding to the secondary preambles, is determined, which connote channel-sharing information. A next available preamble location may be adopted based on the current preamble configuration.
    • 增强帧前同步码可以通过具有至少一个前导码特征来促进无线通信环境中的共信道共存,该前导码特征意味着关于无线通信环境的信道共享信息。 在示例性实施例中,在无线通信环境中的一个或多个无线通信信号中接收下行链路子帧。 在下行链路子帧中检测到前导码,并且确定前导码的至少一个特征。 基于前导码的至少一个特征来确定用于无线通信环境的信道共享信息。 在另一示例性实施例中,扫描信道以检测正在信道上发送的辅助前同步码。 确定包括前导码位置的置换和对应于次要前导码的前导码内容的当前前置码配置,这意味着信道共享信息。 可以基于当前前置码配置来采用下一个可用的前导码位置。
    • 47. 发明授权
    • System and method for facilitating co-channel and co-existence via enhanced frame preambles
    • 通过增强的帧前导码来促进共通道和共存的系统和方法
    • US08050223B2
    • 2011-11-01
    • US11930695
    • 2007-10-31
    • Paul W. PigginSrikanth GummadiRon PoratKenneth L. Stanwood
    • Paul W. PigginSrikanth GummadiRon PoratKenneth L. Stanwood
    • H04W4/00
    • H04W16/14H04W8/005H04W48/12H04W76/10H04W92/20
    • Enhanced frame preambles facilitate co-channel co-existence in a wireless communication environment by having at least one preamble characteristic that connotes channel-sharing information regarding the wireless communication environment. In an exemplary embodiment, a downlink subframe is received in one or more wireless communication signals in a wireless communication environment. A preamble is detected in the downlink subframe, and at least one characteristic of the preamble is ascertained. Channel-sharing information for the wireless communication environment is determined based upon the at least one characteristic of the preamble. In another exemplary embodiment, a channel is scanned to detect secondary preambles being transmitted on the channel. A current preamble configuration, including a permutation of preamble location and preamble content corresponding to the secondary preambles, is determined, which connote channel-sharing information. A next available preamble location may be adopted based on the current preamble configuration.
    • 增强帧前同步码可以通过具有至少一个前导码特征来促进无线通信环境中的共信道共存,该前导码特征意味着关于无线通信环境的信道共享信息。 在示例性实施例中,在无线通信环境中的一个或多个无线通信信号中接收下行链路子帧。 在下行链路子帧中检测到前导码,并且确定前导码的至少一个特性。 基于前导码的至少一个特征来确定用于无线通信环境的信道共享信息。 在另一示例性实施例中,扫描信道以检测正在信道上发送的辅助前同步码。 确定包括前导码位置的置换和对应于次要前导码的前导码内容的当前前置码配置,这意味着信道共享信息。 可以基于当前前置码配置来采用下一个可用的前导码位置。